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BERKSHIRE SAYS THAT IN Q4 IT RECORDED UNSPECIFIED, ONE-TIME INVENTORY AND IMPAIRMENT CHARGES AT ITS PRECISION CASTPARTS UNIT, WHICH REDUCED OVERALL RESULTS

BERKSHIRE SAYS THAT IN Q4 IT RECORDED UNSPECIFIED, ONE-TIME INVENTORY AND IMPAIRMENT CHARGES AT ITS PRECISION CASTPARTS UNIT, WHICH REDUCED OVERALL RESULTS